Improvement in steam-generators



lldiri Seite JOSEPH A. MILLER, OEv BOSTON, MASSACHUSETTS.

Letters Patent No. 109,645, aated'november 29, 1870.

IMPROVEMENT I N STvEAM-GENERATORS.

The Schedule referred to in these Letters Patent and lmaking part of the same.

To all 'whom it may concern Be it known that I, JOSEPH A. MiLLER, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and improved Steam-Generator; Aand I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the nrt to make and use the same, reference being had to the accompanying .drawing forming part ot' this specification. 'n

.The drawing represents a vertical longitudinal section of my improved steam-generator.

My invention relates to steam-generators; and consists in certain improvements, which will be first described in connection witlrall that is necessary to a full-umlerstanding thereof, and then clearlyspecied in the summary or claim.

A in the draw-ing,r represents a vertical and inclined water-and-steam chamber, set up at one end of the generator to receive the ends of a series of circulatingpipes, B, which enter the saine. In the'drawinar but one pipeB is shown'. Any suitable number of sim,- ilar pipes may, however-,he used alongside of each other.

The entire apparatus is Set up within a suitable chamber or structure, which has the necessary doors, grate,

Each pipe B enters the lower part of the chamber A at its lower end, and is there bent back and forth in several'horizontal'or inclined courses, as is clearly shown in the drawing. lhc upper end ofthe pipe enters the upper part of the chamber.

The several courses of the pipe are connected by suitable knees or'bent portions, of which tbosein front cuter and rest within'the chamber A, Ato afford an additional support for the entire pipe.

The chamber A, boing partly llcd with water, causes thc water to cuter the lower part of the pipe B, and to ascend in the same'and circulate therein to be thoroughly heated and evaporated. Steam is finali y discharged from -the upper end of the pipe into the upper part of the chamber.

In order to facilitate the ascent ofthe water in tne pipe, I prefer to iuclinethe lower course or courses upward from the chamber, as shown. The water-level in the chamber and pipes is regulated at will. For producing dry superheated steam, Iprefer'to leavea number of courses of pipe above the waterline. y

The discharge-pipe from the generator is smaller in area than the pipes B, and can therefore -never cause a very rapid outiiow ofst'eam. The circulation in the pipes will consequently remain perfect and steady.

y Gis a downward-projecting ,orinclined or curved shield arranged within the chamber B, above and in front of each discharge-opening of the pipes B. It serves to detlcct the steam downward, and to thereby enable all water held by it to drop by its own gravity into the chamber. The steam will thus be freed from all water.

Having thus described my invention',

I claim 'as new and desire to sec-ure by Letters Patent- 1.` 'lhe pipe B, arranged in courses, which are connected at the ends as set forth, the front connections entering-and being supported by the chamber A, as set forth. v

2. rlhe devfcctor shield C, applied to the upper end of each pipe B within the chamber A, substantially' as and for the purposes herein shown and described.

" JOSEPH A. MILLER.

lYitnesses: O

BENJ. H. Gunmen, CITAS. S. MARSH. 

